28 Fraction Review
[latex]\large\dfrac{\text{Numerator}}{\text{Denominator}}[/latex]
Common Fractions –
Improper Fractions – have a numerator larger than the denominator (greater than or equal to)
Proper Fractions – have a numerator smaller than the denominator (less than)
Equivalent Fractions – may look different but they have the same value
Mixed Numbers – have a whole number part and a proper fraction part
Reduce – to convert the fraction to the lowest equivalent fraction
Invert – to turn upside down
Subtraction and Addition
To subtract or add, fractions must have the same denominator. Just as in whole number subtraction, you may have to ‘borrow’ when subtracting mixed
Multiplication
- Convert all mixed numbers to improper fractions
- Reduce all the fractions to the lowest terms
- Multiply tops by tops, then bottom by bottom
Division
- Change all mixed numbers to improper fractions
- Invert the divisor
- Multiply
- Reduce the answer if possible – reduce then multiply